Nucleic Acids Flashcards
What is the function of NAs
Store hereditary info, determine structural and functional characteristics of organisms
What is the structure of NAs?
Nucleotides joined together in long strands, a phosphate group, sugar, and nitrogenous base
What types of NAs are there?
DNA, RNA
What sugars are in DNA and RNA?
RNA- ribose /DNA- deoxyribose
What nitrogenous base does DNA and RNA contain?
DNA: ACGT RNA: ACGU
What are the pyramidines?
C, T, U
What are the purines?
A, G
What are the bonding pairs of DNA?
A and T/ C and G
What are the bonding pairs of RNA?
A and U/ G and C
What forms two hydrogen bonds?
Will form A and T/U
What forms three hydrogen bonds?
G and C
How ard nucleotides formed?
Through condensation reactions
What is the bond between nucleotides called?
Phosphodiester bond
What is the structure or DNA?
- two strands of nucleotides
- strands held together by hydrogen bonds
- strands are antiparallel
- 3 used to denote sugar end of a nucleotide strand
- 5 denotes phosphate end
- one strand runs 3 to 5 and other 5 to 3
What are the differences between DNA and RNA
DNA- stores genetic info, sugar is deoxyribose, nitrogenous base is ACGT RNA-makes proteins for cells, sugar is ribose, nutrigenous base is ACGU
